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[Viktor Pal <1420935@xxxxxxxxxxxxxxxxxx>]

To workaround this bug.

Create a file named: /etc/modprobe.d/wifi_bug.conf

Add the following lines to the file:
options iwlmvm power_scheme=1
options iwlwifi bt_coex_active=N swcrypto=1 11n_disable=1

Set the file's ownership the same as other files in that folder.

Reboot.

Please note though that this fixes the issue, but prevents N mode from
working, so you are stick with B and G modes.

Otherwise I'm very disappointed that no one cares about this bug as I would be glad to provide all the information I'm able to to get this fixed.
The other thing that makes me very sad is that this was already working perfectly in the past with 12.04 and now it isn't.
This really sounds to me like a step backwards...

Sorry for being emotional.

-- 
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Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1420935

Title:
  Centrino Wireless-N 1030 randomly disconnecting

Status in linux-firmware package in Ubuntu:
  New

Bug description:
  1) The release of Ubuntu you are using:
  Description:	Linux Mint 17.1 Rebecca
  Release:	17.1

  Ubuntu version:
  Ubuntu 14.04

  2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
  Maybe linux-image, linux-firmware or network-manager.

  3) What you expected to happen
  Permanent wifi connection.

  4) What happened instead
  Wireless is disconnecting randomly.

  This wifi card was working for me with Ubuntu 12.04 for several years before flawlessly.
  Now I installed Linux Mint based on Ubuntu 14.04 and it is now randomly disconnecting.
  When it disconnects I disable wireless in the NM applet and enable it again and wifi reconnects.
  Logs regarding the disconnect and the reconnect are attached to the report.

  The disconnect happens 10 to 60 minutes  after it was connected or
  reconnected.

  The laptop I'm using is a  Dell Inspiron N5110 which is officially supported by Ubuntu:
  http://www.ubuntu.com/certification/hardware/201012-6932/

  It seems that I'm not the only one with this issue:
  http://forums.linuxmint.com/viewtopic.php?f=53&t=169633
  http://ubuntuforums.org/showthread.php?t=2220377
  http://ubuntuforums.org/showthread.php?t=2219014
  http://forum.ubuntu-fr.org/viewtopic.php?id=1550761
  http://askubuntu.com/questions/453156/wifi-connection-periodically-dropping-in-centrino-wireless-n-1030
  http://askubuntu.com/questions/363126/slow-wifi-after-with-centrino-wireless-n-1030-rainbow-peak

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-firmware 1.127.11
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
  Uname: Linux 3.13.0-37-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  Date: Wed Feb 11 20:14:39 2015
  Dependencies:

  PackageArchitecture: all
  SourcePackage: linux-firmware
  UpgradeStatus: No upgrade log present (probably fresh install)

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